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AWS incident-manager documentation change

Service: incident-manager · 2025-10-10 · Documentation low

File: incident-manager/latest/userguide/chat.md

Summary

Added notice about Incident Manager's upcoming restriction to new customers.

Security assessment

This is a service lifecycle update without security implications. The notice does not reference vulnerabilities or security controls.

Diff

diff --git a/incident-manager/latest/userguide/chat.md b/incident-manager/latest/userguide/chat.md
index 3c2c235ed..e5709d116 100644
--- a//incident-manager/latest/userguide/chat.md
+++ b//incident-manager/latest/userguide/chat.md
@@ -6,0 +7,2 @@ Task 1: Create or update Amazon SNS topics for your chat channelTask 2: Create a
+AWS Systems Manager Incident Manager will no longer be open to new customers starting November 7, 2025. If you would like to use Incident Manager, sign up prior to that date. Existing customers can continue to use the service as normal. For more information, see [AWS Systems Manager Incident Manager availability change](https://docs.aws.amazon.com/incident-manager/latest/userguide/incident-manager-availability-change.html). 
+